The Marshal answered that he could not "because of an old wound in the leg."
"Señor General," replied San Martin, "the lowest drummer in the united army has more honour than you." And, turning rein, he gave orders to Balcarce to announce to the army that the general of twenty years of warfare was cashiered for unworthy conduct.
On reaching the edge of the Loma, the army was drawn up in order of battle, four heavy guns in the centre, the light pieces and the cavalry on the wings, and the reserve two hundred yards in the rear.
The first movement of the Royalist general was to detach Primo de Rivera with eight companies of infantry and four guns to occupy the detached hill on his left, threatening the right of the Patriots, taking them in flank if they crossed the low ground, and securing, as he thought, the road to Valparaiso; Morgado, with some cavalry, keeping up the connection with the main body. The crest of the Loma was occupied by the infantry in two divisions with four guns each, the rest of the cavalry being stationed on the extreme right. Both armies were in such excellent positions that neither could attack except at a disadvantage.
San Martin, uncertain of the whereabouts of the enemy's artillery, was the first to open fire with his four heavy guns from the centre. The reply gave him the information he required, and he at once ordered the two divisions to attack the enemy. Las Heras advanced resolutely with the 11th battalion, under the fire of the four guns on the hill, to another hill to the right of Primo de Rivera, while the grenadiers, under Escalada, Medina, and Zapiola, drove Morgado and his horsemen in confusion from the field. Rivera was thus cut off from the main body. At the same time the left wing crossed the hollow, ascended the slope in front of them, and reached the high ground without seeing an enemy, but were then vigorously charged by the bulk of the Royalist infantry, under Ordoñez and Morla,
